名校
1 . 如图,已知在矩形
中,
,
,点
是边
的中点,
与
相交于点
,现将
沿
折起,点
的位置记为
,此时
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/8/39a0bfcb-0355-4523-a217-5a44acf0472b.png?resizew=311)
(1)求证:
平面
;
(2)求证:
面
;
(3)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d30374a2dad85e336ceaa462be7e00e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9b123ae31090740589ba27a846620b5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/8/39a0bfcb-0355-4523-a217-5a44acf0472b.png?resizew=311)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/982d01f052709b72afeaf1015fc7acc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e536350bcd19804313eb04f43622943c.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66b1c91be4cd269b869d0fa2956b3685.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e536350bcd19804313eb04f43622943c.png)
(3)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d7f66b146fccec50efa1c316aa1afe0.png)
您最近一年使用:0次
2022-07-06更新
|
1131次组卷
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6卷引用:福建省福州第一中学2022-2023学年高二上学期教学质量检测(12月)数学试题
福建省福州第一中学2022-2023学年高二上学期教学质量检测(12月)数学试题 广东省汕头市2021-2022学年高一下学期期末数学试题(已下线)微专题16 利用传统方法轻松搞定二面角问题(已下线)高一下学期数学期末考试高分押题密卷(五)-《考点·题型·密卷》江苏省常州市溧阳市2022-2023学年高一下学期期末数学试题江苏省常州市华罗庚中学2022-2023学年高一创新班下学期期末数学试题
2 . 如图,已知正方体
的棱长为2,点
为
的中点,点
为正方形
上的动点,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/9/53127c91-1028-4c04-a6c4-540f58701ca2.png?resizew=207)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/9/53127c91-1028-4c04-a6c4-540f58701ca2.png?resizew=207)
A.满足![]() ![]() ![]() ![]() |
B.满足![]() ![]() ![]() |
C.存在唯一的点![]() ![]() |
D.存在点![]() ![]() |
您最近一年使用:0次
2022-07-05更新
|
1394次组卷
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9卷引用:河南省濮阳市2023-2024学年高二上学期9月大联考数学试题
河南省濮阳市2023-2024学年高二上学期9月大联考数学试题陕西省西安市长安区2023-2024学年高二上学期10月月考数学试题贵州省都匀兴华中学2023-2024学年高二上学期阶段测试(一)数学试题广东省梅州市2021-2022学年高二下学期期末数学试题福建省福州第一中学2022-2023学年高二上学期期末数学试题(已下线)1.3.2 空间向量运算的坐标表示(AB分层训练)-【冲刺满分】2023-2024学年高二数学重难点突破+分层训练同步精讲练(人教A版2019选择性必修第一册)(已下线)第03讲 空间向量及其运算的坐标表示(7大考点)-2022-2023学年高二数学考试满分全攻略(人教A版2019选择性必修第一册)福建省福州教育学院附属中学2023-2024学年高二上学期期末考试数学试题安徽省阜阳市阜阳一中2023-2024学年高二下学期开学检测数学试题
名校
3 . 如图,在棱长为
的正方体
中,点
在线段
(不包含端点)上,则下列结论正确的有( )个
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/4/48509185-52e6-44a7-9913-859b5940920f.png?resizew=269)
①点
在平面
的射影为
的中心;
②直线
平面
;
③异面直线
与
所成角不可能为
;
④三棱锥
的外接球表面积的取值范围为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/4/48509185-52e6-44a7-9913-859b5940920f.png?resizew=269)
①点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7977ab975efa6411cc17de39be70d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1335dec9b6a1dcc7b18f7b3989c4cb.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/982d01f052709b72afeaf1015fc7acc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7977ab975efa6411cc17de39be70d9.png)
③异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cdc08e1c4a04a18d5ecea03393e36d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
④三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be2e6dc20ca337c36242d9db606c5c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c6cc40bca9e1a01193fdc0762eceaab.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
4 . 如图,矩形
中,
,
为边
的中点,将
沿直线
翻折至
的位置.若
为线段
的中点,在
翻折过程中(
平面
),给出以下结论:
①三棱锥
体积最大值为
;
②直线
平面
;
③直线
与
所成角为定值;
④存在
,使
.
则其中正确结论的序号为_________ .(填写所有正确结论的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f80f51c31583fea58fde645474d60b8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa2a83fed9bf4cb09d84a980452e346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8588e18e27bfebf7c81c7e3c7efb1149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
①三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb79f948d408ab4fb6708bde172c5e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11b9f96b8ecc3cb000bb2f030809f225.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8c70966a318ef8ecf874257f5c5e5db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657dffbd3623b705f871878fbd9df57e.png)
③直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce1b066f8869d0ff4513f7a99745125.png)
④存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa2a83fed9bf4cb09d84a980452e346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2181c78134c310f746eab44b9124e63b.png)
则其中正确结论的序号为
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/2/db8c3c80-3639-479e-8ae4-e7aeaef6394b.png?resizew=239)
您最近一年使用:0次
2022-07-01更新
|
1382次组卷
|
5卷引用:四川省遂宁中学校2022-2023学年高二上学期9月月考数学(理)试题
解题方法
5 . 已知空间中三条不重合的直线
,两个不重合平面
,以下证明推导过程错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e262af45c35bb6b11d0b15641d43ee5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2022-06-30更新
|
718次组卷
|
2卷引用:四川省峨眉文旅综合高中学校2022-2023学年高二上学期第二次月考数学试题
解题方法
6 . 在正方体ABCD﹣A1B1C1D1中,E是BC1的中点,求证:DE∥平面AB1D1.
您最近一年使用:0次
名校
解题方法
7 . 在长方体
中,AB=3,
,P是线段
上的一动点,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3829997d8af2e692f030cb359761f27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
A.![]() ![]() | B.![]() ![]() ![]() |
C.![]() ![]() | D.以A为球心,5为半径的球面与侧面![]() ![]() |
您最近一年使用:0次
2022-06-14更新
|
1100次组卷
|
4卷引用:湖北省宜昌市长阳土家族自治县第一高级中学2023-2024学年高二上学期9月月考数学试题
名校
8 . 设m,n是两条不同的直线,
,
,
是三个不同的平面,下列四个命题正确的是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
A.![]() ![]() ![]() ![]() |
B.![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() |
您最近一年使用:0次
解题方法
9 . 如图,三棱柱
中,
,
,点
,
分别在
和
上,且满足
,
.
![](https://img.xkw.com/dksih/QBM/2022/5/29/2989841092280320/2992542634631168/STEM/ab798b79f6214540b426903829ea3e18.png?resizew=179)
(1)证明:
平面
;
(2)若
为
中点,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90e17995e2f71e297d94ae51c7e5b1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f1aa2a175b729cc5caee99e809e40b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75a8673c4f89a0c79f454b1a1e939f19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf2496aa984cd7293424dd64506f937.png)
![](https://img.xkw.com/dksih/QBM/2022/5/29/2989841092280320/2992542634631168/STEM/ab798b79f6214540b426903829ea3e18.png?resizew=179)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eaa5e336f830a3e5cd60ff7a756f3ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
您最近一年使用:0次
名校
解题方法
10 . 如图,在正四棱锥
中,
是
的中点,
点在侧面
内及其边界上运动,并且总是保持
平面
.则动点
的轨迹与
组成的相关图形最有可能是图中的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c009f663ad2b0c3ba521daf4b86b066f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55e4efb8e1bf4b3a121d4eb0eacf4d26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5000fea066102e62cf2128ccbbd2b3e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c009f663ad2b0c3ba521daf4b86b066f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-05-25更新
|
1366次组卷
|
8卷引用:四川省峨眉文旅综合高中学校2022-2023学年高二上学期第一次月考数学试题
四川省峨眉文旅综合高中学校2022-2023学年高二上学期第一次月考数学试题山西省太原市第五中学校2021-2022学年高一下学期5月阶段性检测数学试题(已下线)第03讲 空间中平行、垂直问题10种常见考法归类(3)(已下线)专题22 立体几何中的轨迹问题-1(已下线)8.5.2 直线与平面平行(分层作业)-【上好课】2022-2023学年高一数学同步备课系列(人教A版2019必修第二册)(已下线)微专题13 轻松搞定立体几何的轨迹问题(已下线)第三章 空间轨迹问题 专题二 立体几何中位置关系类动点轨迹问题 微点1 立体几何中位置关系类动点轨迹问题【培优版】 (已下线)重难点专题11 轻松搞定立体几何的轨迹问题-【帮课堂】(苏教版2019必修第二册)